Posted by nabiha on Thursday, September 9, 2010 at 2:16pm.
(5 + 2sqrt(5)) / sqrt(5)
Multiply numerator and denominator by
sqrt(5):
(5sqrt(5) + 2 * 5) / 5 =
(5sqrt(5) + 10) / 5 =
Divide numerator and denominator by 5:
(sqrt(5) + 2) / 5
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